Five hundred ninety-nine days after the AT&T-Time Warner deal was announced and after evidence was presented and chewed over during a six-week trial earlier this year, Judge Richard Leon is expected to decide on Tuesday whether the blockbuster $85 billion merger can go through.

The decision could reshape the corporate landscape from coast to coast — not to mention what consumers could pay for entertainment, health care and beyond, experts predict.

Critics of the media mega-merger have argued since Oct. 22, 2016, that allowing AT&T, parent of DirecTV, to buy the owner of HBO, CNN, TBS and the Cartoon Network will allow the telecom giant to steeply raise prices or cut off distribution to rivals like Dish Network.

AT&T has said those critics are wrong.

But Dish is likely one of several companies rooting for Leon to block the deal — as DirecTV will likely emerge stronger after the merger.

Pay-TV providers, like Charter Communications, aren’t deal boosters either — not to mention category killer Netflix, which has grown powerful and wealthy under the current corporate media landscape.

Charter represents 15 percent of Time Warner’s [non-HBO] business, but will see that shrink to only 1 percent post-merger, Charter EVP Tom Montemagno said during the trial, highlighting his company’s concern that AT&T could withhold content from it.

AT&T told the court that Netflix — along with Google, Facebook, Amazon, and Hulu — was running away with the pay-TV industry and costing it customers.

On the other side of the field, cable company Comcast, interested in buying more content, is supporting AT&T, BTIG’s Rich Greenfield said — feeling it will be easier to get approval for its deals if the AT&T deal gets a thumb’s up.

Comcast is expected this week to make a bid for Twenty-First Century Fox’s media assets that will top Disney’s pending $52 billion stock proposal.

In addition, pure-play media companies, including AMC Networks, stand to benefit if AT&T wins because they will be seen as targets with acquirers looking to bulk up on content, sources said.

Then there is CVS Health, which has agreed to buy Aetna — and Cigna, which has agreed to buy Express Scripts — lining up as cheerleaders for AT&T’s vertical merger.